could leapfrog
Verbo regular: leapfrog - leapfroged- leapfroged

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could leapfrog
you could leapfrog
he could leapfrog
we could leapfrog
you could leapfrog
they could leapfrog 	I could be leapfroging
you could be leapfroging
he could be leapfroging
we could be leapfroging
you could be leapfroging
they could be leapfroging	I could have leapfroged
you could have leapfroged
he could have leapfroged
we could have leapfroged
you could have leapfroged
they could have leapfroged	I could have been leapfroging
you could have been leapfroging
he could have been leapfroging
we could have been leapfroging
you could have been leapfroging
they could have been leapfroging	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't leapfrog
you couldn't leapfrog
he couldn't leapfrog
we couldn't leapfrog
you couldn't leapfrog
they couldn't leapfrog 	I couldn't be leapfroging
you couldn't be leapfroging
he couldn't be leapfroging
we couldn't be leapfroging
you couldn't be leapfroging
they couldn't be leapfroging	I couldn't have leapfroged
you couldn't have leapfroged
he couldn't have leapfroged
we couldn't have leapfroged
you couldn't have leapfroged
they couldn't have leapfroged	I couldn't have been leapfroging
you couldn't have been leapfroging
he couldn't have been leapfroging
we couldn't have been leapfroging
you couldn't have been leapfroging
they couldn't have been leapfroging	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I leapfrog?
could you leapfrog?
could he leapfrog?
could we leapfrog?
could you leapfrog?
could they leapfrog? 	could I be leapfroging?
could you be leapfroging?
could he be leapfroging?
could we be leapfroging?
could you be leapfroging?
could they be leapfroging? 	could I have leapfroged?
could you have leapfroged?
could he have leapfroged?
could we have leapfroged?
could you have leapfroged?
could they have leapfroged? 	could I have been leapfroging?
could you have been leapfroging?
could he have been leapfroging?
could we have been leapfroging?
could you have been leapfroging?
could they have been leapfroging? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I leapfrog?
couldn't you leapfrog?
couldn't he leapfrog?
couldn't we leapfrog?
couldn't you leapfrog?
couldn't they leapfrog? 	couldn't I be leapfroging?
couldn't you be leapfroging?
couldn't he be leapfroging?
couldn't we be leapfroging?
couldn't you be leapfroging?
couldn't they be leapfroging? 	couldn't I have leapfroged?
couldn't you have leapfroged?
couldn't he have leapfroged?
couldn't we have leapfroged?
couldn't you have leapfroged?
couldn't they have leapfroged? 	couldn't I have been leapfroging?
couldn't you have been leapfroging?
couldn't he have been leapfroging?
couldn't we have been leapfroging?
couldn't you have been leapfroging?
couldn't they have been leapfroging?